Is your shed ventilated or closed up? Seeing as how it is fall and not too hot you should be OK either way. The 4 ways I ruined staves when I was a rookie; putting them the attic in the summer, putting them in the car with the windows rolled up, putting them in an outside shed with all the windows and doors closed in an Alabama summer (I left the sap wood on also) and putting one behind the water heater to "quick dry it from green".